Consolidated Statement of Stockholders' Equity (USD $) In Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]	Total
Balance, at Dec. 31, 2011	$ 38	$ (587)	$ 420,412	$ (265,784)	$ 154,079
Preferred Stock Dividends				(1,823)	(1,823)
Common stock issuance	9		60,796		60,805
Series C preferred stock conversion			6,273		6,273
Amortization of deferred compensation			6,033		6,033
Other			290		290
Net loss				(126,226)	(126,226)
Balance, at Dec. 31, 2012	47	(587)	493,804	(393,833)	99,431
Preferred Stock Dividends				(1,823)	(1,823)
Common stock issuance			11,286		11,286
Amortization of deferred compensation			4,843		4,843
Other			129	1	130
Net loss				(95,479)	(95,479)
Balance, at Dec. 31, 2013	47	(587)	510,062	(491,134)	18,388
Preferred Stock Dividends				(1,329)	(1,329)
Common stock issuance	3		15,548		15,551
Issuance of warrants			1,542		1,542
Beneficial conversion feature			2,781		2,781
Series C preferred stock conversion	3		26,219		26,222
Amortization of deferred compensation			939		939
Other			20		20
Net loss				(840,255)	(840,255)
Balance, at Dec. 31, 2014	$ 53	$ (587)	$ 557,111	$ (1,332,718)	$ (776,141)